Well-boring rod.



WELL BRLNG HOD.

APPLICATION FILED FEB. 5.191?.

` 111111111111 May 21111111.

.l i stiliening a'well d j 1'0 att whom t may concern.'

I invention has for other modification.

`position in the ends MAHLON E. LATINE,

i ,senses specimens g Application filed February `Be it known that l, Manton E; LAYNE, a citizen of the United States, Houston, in Harris county, Texas, have invented certain new and useful improven ments in Well-Boring Rods, of whichthc following is a specification. f

rlhe invention relates to an improvement in well boring rods7 or other similar devices in which a hollow rod or shaft is used as a rotary power transmission shaft. .The 4 its primary objectsthe revision of means for 'reinforcing `or boring rod, so that a lighter tube maybe used than would otherwise be the case; the whipping or lateral stiffening means; and the provision olf means especially desirable in :large sizemrelatively thin rods, inside couplings like those oi my Patent No'.l,223,591, April 24, 1917are employed. Certainembodiments of the .invention are illustrated in the accompanying drawings, wherein- Figure l is a longitudinal section through one embodiment of the invention; Fig. 2 is a longitudinal section .illustrating 'certain modifications of the construction; Fig. 3 is an end View of the construction of Fig. 4; and Fig. 4l is a section through stillen- Rei'erring to Fig. 1,' the numeral 1 represents a well boring rod ,or tube provided at intervals. with internal stiz'ening rings or portions 2, carrying at its ends the coupling members-3 and 4. The coupling members of the type shown :and claimed in my zo-pending application,

to,'such members being rigidly secured in of the tube by welding or shrinking or by any of the means shown in the said application.

The stiilening rings or thickened portions 2 are spaced apart at any desired interval and may be formed by any of the upsetting,"

processes known in the arts or by rolling the metal in sheets with the raised portions thereon and subsequently forming such sheets into tubes.

Fig. 2 illustrates two modifications of the invention wherein. the tube or rod 5 is provided with the stiil'ening rings 6, 6"y 6, which are not integral with the tube. rllfhey j instruits? the provisionv of means whereby vibration of the rod is reducedl andl its life increased due to the suchas can be' used where Ol? HQUSTN TEXAS.

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may be forced intov power to insure a tight lit, or may be se cured by shrihiring,A the rings being placed cold in a heated tube, or they may bepositioned and held in place by means of lugs 6 formed 'on the inside of the tube. The securing of the rings is also preferably made more positive by spot welding or;by using some mechanical means for attaching them `to the/walls of the pipe, there being a "wide variety of means which might be employed for thispurpose. lt is also possible to secure the rings by placing them in position and subsequently expanding them. Figs. 3 and d illustrate another method ci' insuring maintenance of the rings 7 in are provided with grooves 9 (Fig. 3) aient, one side through which the holding rod 10' extends, such holding' rod being provided with upset portions l1 on op' osite sides of each ring'. lhe rings are 4pre erably tightly fitted into position and the rod l0 is depended upon to insure their proper maintenance in position even though they .should f become loosened by the vibration or for any other reason. The foregoing ismerely illustrative of the invention, as it will be seen that a large number of other means well known in the -mechanical arts might be employed for po--4 sitioning and securing' the rings and that a variety of'methods and machines might be employed for either forming the rings integral, with the pipe or for positioning and securing them. In each case the rings whether integral with the pipe, or litting tightly therein, or somewhat loosely, perform the same function ofr'stiiiening the tubef A tube when subject to torsional position by suiiicient strain, tends to fail by twisting into '5a.

smaller d iaxn eter or collapsing, and the rings or thickened portions resist this collapsing action. By a'proper use of the rings itis possible.' to use a lighter tube than would otherwise be possible, and a tube of the saine thickness thus reinforced is much stronger than a tube without the reinforcing portions. The tube is also much less subject to whipping or lateral vibration so that the lite oit the use of the 'stii'euing einige which reduce' the weakening incident to the constant lateral vibration and twisting torsion. lfhe construction is particularly useful where couplings ot the type shown in Fig.

the tube is prolonged byv 1 are used, although any ordinery'pipe coupling means .may be used, such for exemple$ as that shownf in Fig. 2, Where the ends of the tube are threaded and screwed into the coupling 12. The couplings in Fig. l are inside couplings Wi-th no portion thereof projecting outside the outer diameter of thetube, so that e larger tube can he used as a boring rod 1n a well casing ol' e given diameter than would be 'the cese ifcouplings Were used of the ordinary type in- .volving enlargements at intervals throughout, the length of the boring rod. A relutively larger tube of this type and heving a relatively thin will7 in order that y the weight and expense may not be too is completely reinforced, the couplings constituting stiiiening rings or members at the extreme ends of the tube, While the rings 2 ,provide the necessary stiffness intermediete. the ends. A tube section is thus provided of uniform stil'ness from end to end und there is no Week. spot tending to yield whenl the twisting strain is excessive. FurthermoreA` it :is -to be noted that the reinforcing rings have the effect of distributing the torsional strains over the entire length of e section of the rod, tha/t is to say, While in 'the aggregate the amount of twisting ina-y approximate the twisting if the rings were omitted, such twisting is distributed throughout the rod from ring to ring. Other advantages incident to the construction Will be 'readily axpparent to those skilled in the art.

What I claim is: h

A tubular rotary well boring rod provided in the inte-rior thereof at intervals intermediate its ends wi-th one or more stiffening portions adapted to distribute torsional stresses.y f

MAHLON E. LAYNE.. 

